[go: up one dir, main page]

US7454119B2 - Illumination package - Google Patents

Illumination package Download PDF

Info

Publication number
US7454119B2
US7454119B2 US11/598,839 US59883906A US7454119B2 US 7454119 B2 US7454119 B2 US 7454119B2 US 59883906 A US59883906 A US 59883906A US 7454119 B2 US7454119 B2 US 7454119B2
Authority
US
United States
Prior art keywords
optical element
light
base portion
flared portion
proximal end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
US11/598,839
Other versions
US20070104963A1 (en
Inventor
Min-Hsun Hsieh
Chou-Chih Yin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Epistar Corp
Original Assignee
Epistar Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Epistar Corp filed Critical Epistar Corp
Priority to US11/598,839 priority Critical patent/US7454119B2/en
Assigned to EPISTAR CORPORATION reassignment EPISTAR CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YIN, CHOU-CHIH, HSIEH, MIN-HSUN
Publication of US20070104963A1 publication Critical patent/US20070104963A1/en
Priority to US12/263,332 priority patent/US8704149B2/en
Application granted granted Critical
Publication of US7454119B2 publication Critical patent/US7454119B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0071—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source adapted to illuminate a complete hemisphere or a plane extending 360 degrees around the source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0018—Redirecting means on the surface of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/013—Alloys
    • H01L2924/0132—Binary Alloys
    • H01L2924/01322—Eutectic Alloys, i.e. obtained by a liquid transforming into two solid phases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]

Definitions

  • the present invention relates to a illumination package, and more particularly to a light emitter coupled with an optical lens able to redirect light to a direction approximately perpendicular to the longitudinal axis passing through a horizontal surface of the illumination package.
  • FIG. 1 illustrates a conventional Light Emitting Diode (LED) package 10 that includes an optical lens 11 , a package base 12 , and a LED chip 13 .
  • the LED package 10 has a longitudinal axis 15 passing through the center of the optical lens 11 .
  • the LED chip 13 is positioned on the package base 12 .
  • the package base 12 may have a cup (not shown) with a reflector (not shown) to reflect light emitted from the bottom and sides of the LED chip 13 towards the observer.
  • the optical lens 11 is coupled to the LED chip 13 to receive and redirect light emitted from the LED chip 13 .
  • the optical lens 11 may have a recess 14 to adapt the LED chip 13 .
  • the light entering through the recess 14 of the optical lens 11 may travel in two main light paths.
  • the first light path LP 1 is that the light emitted from the LED chip 13 travels to the surface 1102 and be total-internal-reflected to exit through sidewall 1101 at approximately 90 degree to the longitudinal axis 15 .
  • the second light path LP 2 is that the light emitted from the LED chip 13 travels towards the sidewall 1101 at an angel causing total internal reflection or a reflection from the sidewall 1101 to exit the optical lens 11 at an angle not close to perpendicular to the longitudinal axis 15 .
  • the first light path LP 1 is preferable to generate an efficient side emitting light, while the second light path LP 2 may cause a light spot, which is not desirable with the observer.
  • an illumination package includes an optical element, a package base, and a light emitter.
  • the light emitter is disposed on a surface of the package base.
  • the optical element is attached to the package base and/or light emitter.
  • the optical element has a flared portion and a base portion.
  • the flared portion is formed by an upper surface, a side surface, and a lower surface.
  • the upper surface forms a recess of the flared portion.
  • the side surface is adjacent to upper surface and obliquely angled with respect to a longitudinal axis approximately normal to a horizontal surface of the base portion.
  • the side surface is curved, and preferably is formed as a concaved surface.
  • the lower surface is adjacent to the side surface and connecting to the base portion.
  • the optical element may be radially symmetric about the longitudinal axis.
  • an optical element comprised of a light-pervious material, comprises a base portion having a terrace; a flared portion protruding from said base portion and constructed from an upper surface forming a recess and having a proximal end and a distal end, a side surface, and a lower surface; and wherein said upper surface is substantially parallel to or departs far from said lower surface along a path from said proximal end to said distal end.
  • the optical element is formed in a longitudinal direction, preferably, is bilaterally symmetric about a longitudinal plane passing through the optical element. Furthermore, a convex lens is formed on the upper surface. Specifically, the upper surface is formed as a ripply surface. The propagation direction of the ripples formed on the upper surface may be parallel to the longitudinal direction. The radius of the convex lens is about between 50-60 ⁇ m. The light emitter is preferably arranged along the propagation direction.
  • FIG. 1 illustrates a conventional LED package.
  • FIG. 2A illustrates one embodiment of the invention.
  • FIG. 2B illustrates a cross sectional view of an illumination package of FIG. 2A .
  • FIG. 2C illustrates a cross sectional view of an optical element coupling to the illumination package of FIG. 2A .
  • FIG. 2D illustrates ray-traces of one embodiment of the optical element
  • FIG. 2E illustrates a bottom view of an illumination package of another embodiment of the invention
  • FIG. 2F illustrates a cross sectional view of an illumination package of embodiment of the invention.
  • FIG. 3A illustrates a cross sectional view of an illumination package in accordance with another embodiment of the invention.
  • FIG. 3B illustrates a top view of the illumination package of FIG. 3A .
  • FIG. 3C illustrates a cross sectional view of an illumination package in accordance with another embodiment of the invention.
  • FIG. 3D illustrates a top view of the illumination package of FIG. 3C .
  • FIG. 4 illustrates a perspective view of further embodiment of the invention.
  • FIG. 5A illustrates a perspective view of another further embodiment of the invention.
  • FIG. 5B illustrates a top view of an illumination package of FIG. 5A .
  • FIG. 2A illustrates an example of an illumination package 20 in accordance with one embodiment of the invention.
  • the illumination package 20 includes an optical element 21 , a package base 22 and a longitudinal axis 24 .
  • the optical element 21 such as a lens, is coupled to the package base 22 for redirecting light entering thereinto.
  • the longitudinal axis 24 may pass through the center of the optical element 21 or not, and, preferably, be approximately perpendicular to a horizontal surface of the package base 22 .
  • FIG. 2B illustrates a cross sectional view of the illumination package 20 of FIG. 2A .
  • Light emitter 23 is disposed on a surface of the package base 22 .
  • the light emitter 23 includes but not limited to an LED chip, laser diode, an incandescent lamp, a fluorescent tube, a Cold Cathode Fluorescent Lamp, and any other device able to emit light and be coupled to the optical element 21 .
  • the optical element 21 may be a separate component and attached to the package base 22 by various means including but not limited to screw fixing, snap fitting, friction fitting, adhesive bonding, heat stacking, and ultra-sonic welding.
  • the optical element 21 may be formed onto the package base 22 and/or the light emitter 23 by various means including but not limited to injection molding and casting.
  • the optical element 21 is made of a light-pervious material.
  • the light-pervious material may be a transparent material or an opaque material being totally or partially pervious to light emitted from the light emitter 23 .
  • the light-pervious material includes but not limited to acrylic resin, COC, PMMA, PC, PC/PMMA, Polyetherimide (PEI), fluorocarbon polymer, and silicone.
  • the light-pervious material may be colored to make the optical element 21 acts as a filter in order to generate desired colored light.
  • the refractive index of the optical element 21 has to range between 1.4 to 1.8 in order to create the desired field of illumination in the invention.
  • the refractive index of the optical element 21 may be a number other than above range based on the environment where the illumination package 20 resides or be used.
  • the difference of the refractive index between the optical element 21 and the environment where it exists is between 0.45 to 0.5.
  • the optical element 21 includes a flared portion and a base portion 2106 .
  • the flared portion has an upper surface 2101 forming a recess 2105 in the light-pervious material, a side surface 2102 adjacent to the upper surface 2101 , and a lower surface 2103 adjacent to the side surface 2102 .
  • the base portion 2106 is designed to receive light from the light emitter 23 and may have a cavity 2107 for accommodating the light emitter 23 .
  • the optical element 21 is designed to redirect the majority of light from the light emitter 23 to exit the optical element 21 at the direction approximately normal to the longitudinal axis 24 or the direction not directly pointing to the observer. Furthermore, to avoid a dark spot appearing above the optical element 21 , the minority of light from the light emitter 23 may be directed to the direction approximately parallel to the longitudinal axis 24 or the direction pointing to the observer.
  • the recess 2105 is designed to form the upper surface 2101 .
  • the recess 2105 may have an apex, where the upper surface 2101 sinks, pointing to the light emitter 23 .
  • the apex may be passed by the longitudinal axis 24 or not.
  • a reflective material or structure may be formed on the recess 2105 to totally or partially reflect light traveling to the upper surface 2101 .
  • the reflective material or structure includes but not limited to Ag, Al, Cu, Au, Cr, reflective paint, and Distributed Bragg Reflector (DBR).
  • DBR Distributed Bragg Reflector
  • An ultraviolet resistant material may also be formed on the recess 2105 to prevent the package's components, especially those sensitive to ultraviolet, from degradation in the presence of ultraviolet.
  • the upper surface 2101 is designed as a total internal reflection (TIR) surface to reflect light entering from the base portion 2106 and prevent it from exiting through the recess 2105 , but some light may still pass through the upper surface 2105 at certain incident angle varying with the overall design of the illumination package 20 .
  • the upper surface 2101 may be a flat surface, a rough surface or a curved surface having a constant radius or more than one radius.
  • the curved surface may have a variable radius changing along the curved path of the upper surface 2101 .
  • the radius distant from the apex is larger than that near the apex.
  • the side surface 2102 is designed to be adjacent to the upper surface 2101 and obliquely angled with respect to the longitudinal axis 24 for directing light to the side of the optical element 21 , specifically, to the direction approximately normal to the longitudinal axis 24 . If the angle between the normal vector of the side surface 2102 and the longitudinal axis 24 is about 90 degree, a high percentage of light exiting through the side surface 2102 will travel downward. On the other hand, if the side surface 2102 is obliquely angled with respect, to the longitudinal axis 24 and preferably faces upward, as shown in FIG. 2B , less light will travel downward.
  • the side surface 2102 can be formed in a flat plane, a rough or curved surface.
  • the curved surface can be a concave, a convex, or both. A concave side surface will diverge the light passing through it, while a convex side surface will converge the light passing through it.
  • a rough side surface may scatter light.
  • the lower surface 2103 is designed to be adjacent to the side surface 2102 and connect to the base portion 2106 .
  • the upper surface 2101 , the side surface 2102 , and the lower surface 2103 form a flared portion above the base portion 2106 .
  • the lower surface 2103 may be a flat plane, a rough surface, or a curved surface.
  • a concaved surface 2104 can be formed between the lower surface 2103 and the base portion 2106 . Light emitted from the light emitter 23 and falling on the concaved surface 2104 may be reflected to the area of the recess 2105 and thus increase the amount of light exiting through the recess 2105 . In that case, the observer may not easily detect a dark spot appearing above the recess 2105 of the optical element 21 of the illumination package 20 .
  • a concaved surface 2104 can be formed between the lower surface 2103 and the base portion 2106 . Light emitted from the light emitter 23 and falling on the concaved surface 2104 may be reflected to the area of the recess 2105 and thus increase the amount of light exiting through the recess 2105 . In that case, the observer may not easily detect a dark spot appearing above the recess 2105 of the optical element 21 of the illumination package 20 .
  • the flared portion has a proximal end 2502 and a distal end 2504 , and one end 2506 of the lower surface 2103 of the flared portion neighbors the proximal end 2502 of the flared portion.
  • a cavity 2107 can be formed in the base portion 2106 to accommodate the light emitter 23 .
  • the cavity 2107 has a volume preferably forming as a cone. The invention is not limited thereto.
  • the cavity 2107 can have a volume forming a pyramid.
  • the cavity 2107 can have a volume forming a hemisphere.
  • the apex of cone or pyramid, or the top of the hemisphere may point to the apex of the recess 2105 .
  • the terrace 2108 of the base portion 2106 may be formed as a horizontal plane, a curved surface or an incline. Light passing through the incline sloping at a certain angle may be refracted and move substantially perpendicular to the longitudinal axis 24 .
  • FIG. 2D illustrates ray traces of light through the optical element 21 from an emitting point P inside the base portion.
  • the light trace L 1 emitted from the point P and incident on the upper surface 2101 is bent to reach lower surface 2103 or leave optical element 21 for one or more times total internal reflections, and horizontally exits the optical element 21 for the refraction caused by the curved side surface 2102 .
  • the light trace L 2 emitted from the point P and bent on the concaved surface 2104 to the upper surface 2101 is redirected twice for total internal reflection and horizontally exits the optical element 21 for the refraction caused by the curved side surface 2102 .
  • the light trace L 3 emitted from the point P and incident on the inclined surface of the terrace 2108 is refracted off and horizontally exits out the optical element 21 .
  • the shape of optical element 21 from top view may be an ellipse, a circle, or a rectangle. If the optical element 21 is radially symmetric about the longitudinal axis 24 passing through the center of the optical element 21 , the shape of optical element 21 from top view is a circle. In the case, the longitudinal axis 24 may also pass through the apex of the recess 2105 . If the optical element 21 is bilateral symmetric about a central plane dividing the optical element 21 into two identical parts, the shape of optical element 21 from top view can be an ellipse, a circle, or a rectangle. In the case, the longitudinal axis 24 resides on the central plane and may pass through the apex of the recess 2105 .
  • FIGS. 3 A.about. 3 D illustrate the optical elements 21 in accordance with another embodiment of the invention.
  • the upper surface 2101 of the optical element 21 is formed as a ripply surface.
  • the ripple 2109 of the upper surface 2101 may sweep about the longitudinal axis 24 , as shown in FIG. 3A , or move radially outward from the deepest portion of the recess 2105 , as shown in FIG. 3C .
  • FIGS. 3B and 3D are the top views of the two types of the ripply surfaces respectively.
  • the ripples 2109 can be formed as a plurality of convex lenses.
  • the radius of the convex lens may be varied about between 50-60 ⁇ m.
  • FIG. 4 illustrates a perspective view of further embodiment of the invention.
  • the illumination package 30 of this embodiment includes an optical element 31 , a package base 32 , light emitter 33 , and a longitudinal plane 34 .
  • the optical element 31 has a cross section similar to that of the optical element 21 illustrated above. The difference between the optical elements 31 and 21 is that the optical element 31 is formed in a longitudinal direction 35 and passed by a longitudinal plane 34 .
  • the longitudinal direction 35 is normal to the cross section of the optical element 31 .
  • the longitudinal plane 34 may pass through the centerline of the optical element 31 or not, and, preferably, be approximately perpendicular to a horizontal surface of the package base 32 .
  • FIG. 5A illustrates a perspective view of an illumination package with a ripply upper surface in accordance with an embodiment of the invention.
  • FIG. 5B illustrates the top view of the illumination package of FIG. 5A .
  • the illumination package 31 has components similar to those in FIG. 4 except the ripples 3109 formed on the upper surface of the optical element 31 .
  • the ripples 3109 run along a propagation direction 3110 .
  • the propagation direction 3110 is the direction where the ripples move, and preferably parallels or approximately parallels to the longitudinal direction 35 , but other direction is also accepted.
  • the light emitter 33 may be disposed below the optical element 31 , and preferably arranged in a direction parallel to the propagation direction 3110 .

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Lenses (AREA)
  • Liquid Crystal (AREA)

Abstract

An illumination package is disclosed in the invention. The illumination package includes an optical element, package base, and a light emitter. The optical element is designed to redirect a majority of light emitted from the light emitter to a direction approximately perpendicular to a longitudinal axis of the optical element. In one embodiment, the optical element includes an flared portion and a base portion. The flared portion is constructed by an upper surface forming a recess, a side surface adjacent to the upper surface and curved, and a lower surface connecting to the base portion. In another embodiment, a concave lens is formed on the upper surface.

Description

RELATED APPLICATIONS
This application is a continuation-in-part of Ser. No. 11/233,030 filed Sep. 23, 2005 now U.S. Pat. No. 7,142,769, which claims priority to Taiwan applications No. 093129157, filed Sep. 24, 2004 and No. 094114630, filed May 6, 2005, the disclosures of which are incorporated herein by reference in their entirety.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a illumination package, and more particularly to a light emitter coupled with an optical lens able to redirect light to a direction approximately perpendicular to the longitudinal axis passing through a horizontal surface of the illumination package.
2. Description of the Related Art
FIG. 1 illustrates a conventional Light Emitting Diode (LED) package 10 that includes an optical lens 11, a package base 12, and a LED chip 13. The LED package 10 has a longitudinal axis 15 passing through the center of the optical lens 11. The LED chip 13 is positioned on the package base 12. The package base 12 may have a cup (not shown) with a reflector (not shown) to reflect light emitted from the bottom and sides of the LED chip 13 towards the observer.
The optical lens 11 is coupled to the LED chip 13 to receive and redirect light emitted from the LED chip 13. The optical lens 11 may have a recess 14 to adapt the LED chip 13. The light entering through the recess 14 of the optical lens 11 may travel in two main light paths. The first light path LP1 is that the light emitted from the LED chip 13 travels to the surface 1102 and be total-internal-reflected to exit through sidewall 1101 at approximately 90 degree to the longitudinal axis 15. The second light path LP2 is that the light emitted from the LED chip 13 travels towards the sidewall 1101 at an angel causing total internal reflection or a reflection from the sidewall 1101 to exit the optical lens 11 at an angle not close to perpendicular to the longitudinal axis 15. The first light path LP1 is preferable to generate an efficient side emitting light, while the second light path LP2 may cause a light spot, which is not desirable with the observer.
A need exists for an LED package or illumination device to reduce its entire size by coupling a shallow optical lens and avoid light spots suffered by the observer. A need also exists for an LED package or illumination device to provide uniform colored light.
BRIEF SUMMARY OF THE INVENTION
In accordance with one embodiment of the invention, an illumination package includes an optical element, a package base, and a light emitter. The light emitter is disposed on a surface of the package base. The optical element is attached to the package base and/or light emitter. The optical element has a flared portion and a base portion. The flared portion is formed by an upper surface, a side surface, and a lower surface. The upper surface forms a recess of the flared portion. The side surface is adjacent to upper surface and obliquely angled with respect to a longitudinal axis approximately normal to a horizontal surface of the base portion. Besides, the side surface is curved, and preferably is formed as a concaved surface. The lower surface is adjacent to the side surface and connecting to the base portion. The optical element may be radially symmetric about the longitudinal axis.
In another embodiment of the invention, an optical element, comprised of a light-pervious material, comprises a base portion having a terrace; a flared portion protruding from said base portion and constructed from an upper surface forming a recess and having a proximal end and a distal end, a side surface, and a lower surface; and wherein said upper surface is substantially parallel to or departs far from said lower surface along a path from said proximal end to said distal end.
In accordance with another embodiment of the invention, the optical element is formed in a longitudinal direction, preferably, is bilaterally symmetric about a longitudinal plane passing through the optical element. Furthermore, a convex lens is formed on the upper surface. Specifically, the upper surface is formed as a ripply surface. The propagation direction of the ripples formed on the upper surface may be parallel to the longitudinal direction. The radius of the convex lens is about between 50-60 μm. The light emitter is preferably arranged along the propagation direction.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 illustrates a conventional LED package.
FIG. 2A illustrates one embodiment of the invention.
FIG. 2B illustrates a cross sectional view of an illumination package of FIG. 2A.
FIG. 2C illustrates a cross sectional view of an optical element coupling to the illumination package of FIG. 2A.
FIG. 2D illustrates ray-traces of one embodiment of the optical element, FIG. 2E illustrates a bottom view of an illumination package of another embodiment of the invention, and FIG. 2F illustrates a cross sectional view of an illumination package of embodiment of the invention.
FIG. 3A illustrates a cross sectional view of an illumination package in accordance with another embodiment of the invention.
FIG. 3B illustrates a top view of the illumination package of FIG. 3A.
FIG. 3C illustrates a cross sectional view of an illumination package in accordance with another embodiment of the invention.
FIG. 3D illustrates a top view of the illumination package of FIG. 3C.
FIG. 4 illustrates a perspective view of further embodiment of the invention.
FIG. 5A illustrates a perspective view of another further embodiment of the invention.
FIG. 5B illustrates a top view of an illumination package of FIG. 5A.
 DETAILED DESCRIPTION OF THE INVENTION
FIG. 2A illustrates an example of an illumination package 20 in accordance with one embodiment of the invention. The illumination package 20 includes an optical element 21, a package base 22 and a longitudinal axis 24. The optical element 21, such as a lens, is coupled to the package base 22 for redirecting light entering thereinto. The longitudinal axis 24 may pass through the center of the optical element 21 or not, and, preferably, be approximately perpendicular to a horizontal surface of the package base 22.
FIG. 2B illustrates a cross sectional view of the illumination package 20 of FIG. 2A. Light emitter 23 is disposed on a surface of the package base 22. The light emitter 23 includes but not limited to an LED chip, laser diode, an incandescent lamp, a fluorescent tube, a Cold Cathode Fluorescent Lamp, and any other device able to emit light and be coupled to the optical element 21.
The optical element 21 may be a separate component and attached to the package base 22 by various means including but not limited to screw fixing, snap fitting, friction fitting, adhesive bonding, heat stacking, and ultra-sonic welding. Alternatively, the optical element 21 may be formed onto the package base 22 and/or the light emitter 23 by various means including but not limited to injection molding and casting.
The optical element 21 is made of a light-pervious material. The light-pervious material may be a transparent material or an opaque material being totally or partially pervious to light emitted from the light emitter 23. The light-pervious material includes but not limited to acrylic resin, COC, PMMA, PC, PC/PMMA, Polyetherimide (PEI), fluorocarbon polymer, and silicone. The light-pervious material may be colored to make the optical element 21 acts as a filter in order to generate desired colored light.
If the illumination package 20 is positioned in an environment filled with air having a refractive index of one, the refractive index of the optical element 21 has to range between 1.4 to 1.8 in order to create the desired field of illumination in the invention. The refractive index of the optical element 21 may be a number other than above range based on the environment where the illumination package 20 resides or be used. Preferably, the difference of the refractive index between the optical element 21 and the environment where it exists is between 0.45 to 0.5.
As shown in FIG. 2B, the optical element 21 includes a flared portion and a base portion 2106. The flared portion has an upper surface 2101 forming a recess 2105 in the light-pervious material, a side surface 2102 adjacent to the upper surface 2101, and a lower surface 2103 adjacent to the side surface 2102. The base portion 2106 is designed to receive light from the light emitter 23 and may have a cavity 2107 for accommodating the light emitter 23. The optical element 21 is designed to redirect the majority of light from the light emitter 23 to exit the optical element 21 at the direction approximately normal to the longitudinal axis 24 or the direction not directly pointing to the observer. Furthermore, to avoid a dark spot appearing above the optical element 21, the minority of light from the light emitter 23 may be directed to the direction approximately parallel to the longitudinal axis 24 or the direction pointing to the observer.
The recess 2105 is designed to form the upper surface 2101. Preferably, the recess 2105 may have an apex, where the upper surface 2101 sinks, pointing to the light emitter 23. The apex may be passed by the longitudinal axis 24 or not. A reflective material or structure may be formed on the recess 2105 to totally or partially reflect light traveling to the upper surface 2101. The reflective material or structure includes but not limited to Ag, Al, Cu, Au, Cr, reflective paint, and Distributed Bragg Reflector (DBR). An ultraviolet resistant material may also be formed on the recess 2105 to prevent the package's components, especially those sensitive to ultraviolet, from degradation in the presence of ultraviolet.
The upper surface 2101 is designed as a total internal reflection (TIR) surface to reflect light entering from the base portion 2106 and prevent it from exiting through the recess 2105, but some light may still pass through the upper surface 2105 at certain incident angle varying with the overall design of the illumination package 20. The upper surface 2101 may be a flat surface, a rough surface or a curved surface having a constant radius or more than one radius. Specifically, the curved surface may have a variable radius changing along the curved path of the upper surface 2101. Preferably, the radius distant from the apex is larger than that near the apex.
The side surface 2102 is designed to be adjacent to the upper surface 2101 and obliquely angled with respect to the longitudinal axis 24 for directing light to the side of the optical element 21, specifically, to the direction approximately normal to the longitudinal axis 24. If the angle between the normal vector of the side surface 2102 and the longitudinal axis 24 is about 90 degree, a high percentage of light exiting through the side surface 2102 will travel downward. On the other hand, if the side surface 2102 is obliquely angled with respect, to the longitudinal axis 24 and preferably faces upward, as shown in FIG. 2B, less light will travel downward. The side surface 2102 can be formed in a flat plane, a rough or curved surface. The curved surface can be a concave, a convex, or both. A concave side surface will diverge the light passing through it, while a convex side surface will converge the light passing through it. A rough side surface may scatter light.
The lower surface 2103 is designed to be adjacent to the side surface 2102 and connect to the base portion 2106. The upper surface 2101, the side surface 2102, and the lower surface 2103 form a flared portion above the base portion 2106. The lower surface 2103 may be a flat plane, a rough surface, or a curved surface.
A concaved surface 2104 can be formed between the lower surface 2103 and the base portion 2106. Light emitted from the light emitter 23 and falling on the concaved surface 2104 may be reflected to the area of the recess 2105 and thus increase the amount of light exiting through the recess 2105. In that case, the observer may not easily detect a dark spot appearing above the recess 2105 of the optical element 21 of the illumination package 20.
A concaved surface 2104 can be formed between the lower surface 2103 and the base portion 2106. Light emitted from the light emitter 23 and falling on the concaved surface 2104 may be reflected to the area of the recess 2105 and thus increase the amount of light exiting through the recess 2105. In that case, the observer may not easily detect a dark spot appearing above the recess 2105 of the optical element 21 of the illumination package 20. The flared portion has a proximal end 2502 and a distal end 2504, and one end 2506 of the lower surface 2103 of the flared portion neighbors the proximal end 2502 of the flared portion.
A cavity 2107 can be formed in the base portion 2106 to accommodate the light emitter 23. The cavity 2107 has a volume preferably forming as a cone. The invention is not limited thereto. As shown in FIG. 2E, the cavity 2107 can have a volume forming a pyramid. Further, as shown in FIG. 2F, the cavity 2107 can have a volume forming a hemisphere. The apex of cone or pyramid, or the top of the hemisphere may point to the apex of the recess 2105. The terrace 2108 of the base portion 2106 may be formed as a horizontal plane, a curved surface or an incline. Light passing through the incline sloping at a certain angle may be refracted and move substantially perpendicular to the longitudinal axis 24.
FIG. 2D illustrates ray traces of light through the optical element 21 from an emitting point P inside the base portion. The light trace L1 emitted from the point P and incident on the upper surface 2101 is bent to reach lower surface 2103 or leave optical element 21 for one or more times total internal reflections, and horizontally exits the optical element 21 for the refraction caused by the curved side surface 2102. The light trace L2 emitted from the point P and bent on the concaved surface 2104 to the upper surface 2101 is redirected twice for total internal reflection and horizontally exits the optical element 21 for the refraction caused by the curved side surface 2102. The light trace L3 emitted from the point P and incident on the inclined surface of the terrace 2108 is refracted off and horizontally exits out the optical element 21.
The shape of optical element 21 from top view may be an ellipse, a circle, or a rectangle. If the optical element 21 is radially symmetric about the longitudinal axis 24 passing through the center of the optical element 21, the shape of optical element 21 from top view is a circle. In the case, the longitudinal axis 24 may also pass through the apex of the recess 2105. If the optical element 21 is bilateral symmetric about a central plane dividing the optical element 21 into two identical parts, the shape of optical element 21 from top view can be an ellipse, a circle, or a rectangle. In the case, the longitudinal axis 24 resides on the central plane and may pass through the apex of the recess 2105.
FIGS. 3A.about.3D illustrate the optical elements 21 in accordance with another embodiment of the invention. In this embodiment, the upper surface 2101 of the optical element 21 is formed as a ripply surface. The ripple 2109 of the upper surface 2101 may sweep about the longitudinal axis 24, as shown in FIG. 3A, or move radially outward from the deepest portion of the recess 2105, as shown in FIG. 3C. FIGS. 3B and 3D are the top views of the two types of the ripply surfaces respectively. The ripples 2109 can be formed as a plurality of convex lenses. The radius of the convex lens may be varied about between 50-60 μm.
FIG. 4 illustrates a perspective view of further embodiment of the invention. The illumination package 30 of this embodiment includes an optical element 31, a package base 32, light emitter 33, and a longitudinal plane 34. The optical element 31 has a cross section similar to that of the optical element 21 illustrated above. The difference between the optical elements 31 and 21 is that the optical element 31 is formed in a longitudinal direction 35 and passed by a longitudinal plane 34. The longitudinal direction 35 is normal to the cross section of the optical element 31. The longitudinal plane 34 may pass through the centerline of the optical element 31 or not, and, preferably, be approximately perpendicular to a horizontal surface of the package base 32.
FIG. 5A illustrates a perspective view of an illumination package with a ripply upper surface in accordance with an embodiment of the invention. FIG. 5B illustrates the top view of the illumination package of FIG. 5A. As shown in FIG. 5A, the illumination package 31 has components similar to those in FIG. 4 except the ripples 3109 formed on the upper surface of the optical element 31. As shown in FIG. 5B, the ripples 3109 run along a propagation direction 3110. The propagation direction 3110 is the direction where the ripples move, and preferably parallels or approximately parallels to the longitudinal direction 35, but other direction is also accepted. The light emitter 33 may be disposed below the optical element 31, and preferably arranged in a direction parallel to the propagation direction 3110.
As is understood by a person skilled in the art, the foregoing preferred embodiments of the present invention are illustrated of the present invention rather than limiting of the present invention. It is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims, the scope of which should be accorded the broadest interpretation so as to encompass all such modifications and similar structures.

Claims (19)

1. An optical element comprised of a light-pervious material, comprising:
a base portion having a terrace;
a flared portion protruding from said base portion and constructed from an upper surface forming a recess and having a proximal end and a distal end, a side surface, and a lower surface; and
wherein said upper surface is substantially parallel to or departs far from said lower surface along a path from said proximal end to said distal end, one end of the lower surface of the flared portion neighbors the proximal end of the flared portion, and said upper surface and said lower surface are curved to the same direction.
2. The optical element of claim 1, wherein said upper surface is selected from the group consisting of a flat plane, a rough surface, a curved surface, and any combination thereof.
3. The optical element of claim 1, wherein said side surface is selected from the group consisting of a flat plane, a rough surface, a curved surface, and any combination thereof.
4. The optical element of claim 1, wherein said lower surface is selected from the group consisting of a flat plane, a rough surface, a curved surface, and any combination thereof.
5. The optical element of claim 1, further comprising:
a concaved surface connecting to said lower surface and said base portion.
6. The optical element of claim 1, wherein said terrace comprises an exposed surface selected from the group consisting of a horizontal plane, a curved surface, an incline, and any combination thereof.
7. The optical element of claim 1, wherein said flared portion is radially symmetric about a longitudinal axis passing through said optical element.
8. The optical element of claim 1, wherein said flared portion is bilaterally symmetric about a longitudinal plane passing through said optical element.
9. The optical element of claim 1, further comprising:
a cavity formed on a side different from that of said recess on said base portion.
10. The optical element of claim 9, wherein said cavity has a shape selected from the group consisting of a cone, a pyramid, and a hemisphere.
11. The optical element of claim 1, further comprising:
a package base for supporting at least one of said base portion and said flared portion.
12. The optical element of claim 11, wherein at least one of said base portion and said flared portion is attached to said package portion by a means selected from the group consisting of screwing, snap fitting, friction fitting, adhesive bonding, heat stacking, ultra-sonic welding, and any combination thereof.
13. The optical element of claim 1, wherein said base portion is adapted to receiving light from a light emitter.
14. The optical element of claim 13, wherein said light emitter is selected from the group consisting of a light-emitting diode, a laser diode, an incandescent lamp, a fluorescent tube, and a cold cathode fluorescent lamp.
15. The optical element of claim 13, wherein a part of light from said light emitter is refracted out of said optical element through said terrace.
16. The optical element of claim 13, wherein a part of light from said light emitter is guided out of said optical element via reflecting between said upper surface and said lower surface.
17. The optical element of claim 13, wherein a part of light from said light emitter passes through said recess.
18. An optical element comprised of a light-pervious material, comprising:
a base portion having a terrace;
a flared portion protruding from said base portion and constructed from an upper surface forming a recess and having a proximal end and a distal end, a side surface, and a lower surface; and
wherein said upper surface is substantially parallel to or departs far from said lower surface along a oath from said proximal end to said distal end, one end of the lower surface of the flared portion neighbors the proximal end of the flared portion, and said side surface is substantially faced upward.
19. An optical element comprised of a light-pervious material, comprising:
a base portion having a terrace;
a flared portion protruding from said base portion and constructed from an upper surface forming a recess and having a proximal end and a distal end, a side surface, and a lower surface; and
wherein said upper surface is substantially parallel to or departs far from said lower surface along a path from said proximal end to said distal end, one end of the lower surface of the flared portion neighbors the proximal end of the flared portion, and said side surface is obliquely angled with respect to a longitudinal axis substantially perpendicular to a bottom surface of said base portion.
US11/598,839 2004-09-24 2006-11-14 Illumination package Active US7454119B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/598,839 US7454119B2 (en) 2004-09-24 2006-11-14 Illumination package
US12/263,332 US8704149B2 (en) 2004-09-24 2008-10-31 Optoelectronic device assembly having auxiliary energy receiver

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
TW93129157 2004-09-24
TW93129157 2004-09-24
TW94114630 2005-05-06
TW94114630A TWI249257B (en) 2004-09-24 2005-05-06 Illumination apparatus
US11/233,030 US7142769B2 (en) 2004-09-24 2005-09-23 Illumination package
US11/598,839 US7454119B2 (en) 2004-09-24 2006-11-14 Illumination package

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US11/233,030 Continuation-In-Part US7142769B2 (en) 2004-09-24 2005-09-23 Illumination package

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/263,332 Continuation-In-Part US8704149B2 (en) 2004-09-24 2008-10-31 Optoelectronic device assembly having auxiliary energy receiver

Publications (2)

Publication Number Publication Date
US20070104963A1 US20070104963A1 (en) 2007-05-10
US7454119B2 true US7454119B2 (en) 2008-11-18

Family

ID=36099195

Family Applications (4)

Application Number Title Priority Date Filing Date
US11/229,761 Active 2026-01-03 US7341358B2 (en) 2004-09-24 2005-09-20 Illumination apparatus
US11/233,030 Active US7142769B2 (en) 2004-09-24 2005-09-23 Illumination package
US11/598,839 Active US7454119B2 (en) 2004-09-24 2006-11-14 Illumination package
US12/007,745 Active 2028-05-08 US8657467B2 (en) 2004-09-24 2008-01-15 Illumination apparatus

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US11/229,761 Active 2026-01-03 US7341358B2 (en) 2004-09-24 2005-09-20 Illumination apparatus
US11/233,030 Active US7142769B2 (en) 2004-09-24 2005-09-23 Illumination package

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/007,745 Active 2028-05-08 US8657467B2 (en) 2004-09-24 2008-01-15 Illumination apparatus

Country Status (5)

Country Link
US (4) US7341358B2 (en)
JP (3) JP2006093148A (en)
KR (1) KR100990813B1 (en)
DE (2) DE102005045588B4 (en)
TW (1) TWI249257B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100118531A1 (en) * 2007-04-05 2010-05-13 Koninklijke Philips Electronics N.V. Light-beam shaper
US7766509B1 (en) 2008-06-13 2010-08-03 Lumec Inc. Orientable lens for an LED fixture
US20100195333A1 (en) * 2009-01-30 2010-08-05 Gary Eugene Schaefer Led optical assembly
US20100271829A1 (en) * 2008-06-13 2010-10-28 Lumec Inc. Orientable lens for a led fixture
US20110157898A1 (en) * 2009-11-04 2011-06-30 Nalux Co., Ltd. Illuminating device
US20120313534A1 (en) * 2011-06-08 2012-12-13 GE Lighting Solutions, LLC Low profile lamp using tir lens
US20130027946A1 (en) * 2011-07-29 2013-01-31 Taiwan Semiconductor Manufactruring Company, Ltd. Wide angle based indoor lighting lamp
US20130221829A1 (en) * 2010-08-31 2013-08-29 Toshiba Lighting & Technology Corporation Lens, lighting device, bulb-type lamp, and luminaire
TWI418854B (en) * 2010-03-16 2013-12-11 Cal Comp Electronics & Comm Co Lens structure
TWI459048B (en) * 2009-02-26 2014-11-01
DE102008001164B4 (en) * 2007-04-17 2015-01-15 Varroc Lighting Systems S.R.O lens assembly

Families Citing this family (185)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4339143B2 (en) * 2004-02-10 2009-10-07 株式会社小糸製作所 Vehicle lamp unit
KR20060012959A (en) * 2004-08-05 2006-02-09 삼성전자주식회사 Backlight for display device
US7724321B2 (en) * 2004-09-24 2010-05-25 Epistar Corporation Liquid crystal display
TWI249257B (en) * 2004-09-24 2006-02-11 Epistar Corp Illumination apparatus
KR100688767B1 (en) * 2004-10-15 2007-02-28 삼성전기주식회사 Lens for LED Light Source
KR100754169B1 (en) * 2004-11-24 2007-09-03 삼성전자주식회사 Side light emitting device, backlight unit using same as light source, and liquid crystal display device employing same
TWI313775B (en) * 2005-01-06 2009-08-21 Au Optronics Corp Backlight module and illumination device thereof
KR100644684B1 (en) * 2005-02-26 2006-11-14 삼성전자주식회사 Straight Side Light Emitter, Backlight System and Liquid Crystal Display Apparatus
EP1717627A1 (en) * 2005-04-26 2006-11-02 LG Electronics, Inc. Optical lens, light emitting device package using the optical lens, and backlight unit
US20060285311A1 (en) * 2005-06-19 2006-12-21 Chih-Li Chang Light-emitting device, backlight module, and liquid crystal display using the same
US7755811B2 (en) * 2005-06-30 2010-07-13 Xerox Corporation Document illuminator
KR20070013469A (en) * 2005-07-26 2007-01-31 삼성전자주식회사 Optical lens and optical package, backlight assembly and display device having same
TWI260380B (en) * 2005-08-05 2006-08-21 Chi Lin Technology Co Ltd Lens for LED
US7588359B2 (en) * 2005-09-26 2009-09-15 Osram Sylvania Inc. LED lamp with direct optical coupling in axial arrangement
KR100788426B1 (en) * 2005-11-19 2007-12-24 삼성전자주식회사 Backlight unit and liquid crystal display including the same
JP4600257B2 (en) * 2005-11-25 2010-12-15 ソニー株式会社 Light guide plate, backlight device, manufacturing method thereof, and liquid crystal display device
TWM291088U (en) * 2005-12-08 2006-05-21 Upec Electronics Corp Illuminating device
TWI281556B (en) * 2006-03-15 2007-05-21 Bright Led Electronics Corp Lens, light-emitting apparatus with lens and its manufacturing method
CN100456505C (en) * 2006-04-10 2009-01-28 中强光电股份有限公司 Light emitting module
US20070257270A1 (en) * 2006-05-02 2007-11-08 3M Innovative Properties Company Led package with wedge-shaped optical element
US20070258241A1 (en) * 2006-05-02 2007-11-08 3M Innovative Properties Company Led package with non-bonded converging optical element
US7525126B2 (en) * 2006-05-02 2009-04-28 3M Innovative Properties Company LED package with converging optical element
US20070257271A1 (en) * 2006-05-02 2007-11-08 3M Innovative Properties Company Led package with encapsulated converging optical element
US7390117B2 (en) * 2006-05-02 2008-06-24 3M Innovative Properties Company LED package with compound converging optical element
US7805048B2 (en) * 2006-05-10 2010-09-28 Cree, Inc. Methods and apparatus for directing light emitting diode output light
KR20090031370A (en) * 2006-05-23 2009-03-25 크리 엘이디 라이팅 솔루션즈, 인크. Lighting device
US7952110B2 (en) * 2006-06-12 2011-05-31 3M Innovative Properties Company LED device with re-emitting semiconductor construction and converging optical element
KR100820975B1 (en) * 2006-06-13 2008-04-10 엘지전자 주식회사 Surface light source device, backlight unit and liquid crystal display device having same
TWI298095B (en) * 2006-07-04 2008-06-21 Coretronic Corp Light emitting device
US7254309B1 (en) * 2006-07-14 2007-08-07 Coretronic Corporation Side emitting LED and lens
WO2008011377A2 (en) * 2006-07-17 2008-01-24 3M Innovative Properties Company Led package with converging extractor
DE102006034070A1 (en) * 2006-07-20 2008-01-31 Schefenacker Vision Systems Germany Gmbh Light unit with a light-emitting diode with integrated Lichtumlenkkörper
WO2008035485A1 (en) * 2006-09-21 2008-03-27 Sharp Kabushiki Kaisha Backlight unit and liquid crystal display device
CN101150158A (en) * 2006-09-21 2008-03-26 鸿富锦精密工业（深圳）有限公司 Light-emitting diode and its preparation method
TW200823558A (en) * 2006-11-23 2008-06-01 Lite On Technology Corp Light source unit and backlight module with the light source unit
JP4853252B2 (en) * 2006-11-27 2012-01-11 日亜化学工業株式会社 Lighting device
CN101206271B (en) * 2006-12-19 2012-04-11 香港应用科技研究院有限公司 Total reflection side emission coupling device
WO2008080996A1 (en) * 2006-12-29 2008-07-10 Oy Modines Ltd Incoupling structure for lighting applications
US20090067175A1 (en) * 2007-01-04 2009-03-12 Bright Led Electronics Corp. Lens for use with a light-emitting element and light source device including the lens
DE102007002403B4 (en) * 2007-01-17 2016-03-03 Osram Gmbh Lighting arrangement, multiple light module, luminaire and their use
KR100851146B1 (en) * 2007-02-05 2008-08-08 엘지이노텍 주식회사 Surface light source device and display device using same
TWI410711B (en) * 2007-03-27 2013-10-01 Cpt Technology Group Co Ltd Back light module and liquid crystal display having the same
KR100870065B1 (en) * 2007-04-11 2008-11-24 알티전자 주식회사 Method of manufacturing lens for LED package
US7967477B2 (en) * 2007-09-06 2011-06-28 Philips Lumileds Lighting Company Llc Compact optical system and lenses for producing uniform collimated light
EP2081172A1 (en) * 2008-01-18 2009-07-22 G-LEC Europe GmbH Display panel and display system
JP2009195273A (en) * 2008-02-19 2009-09-03 Sanyo Electric Co Ltd Showcase
CN101246945B (en) * 2008-02-29 2010-06-16 北京大学 An edge-emitting LED packaging structure
JP4470071B2 (en) * 2008-03-03 2010-06-02 フェリカネットワークス株式会社 Card issuing system, card issuing server, card issuing method and program
JP5150335B2 (en) * 2008-03-28 2013-02-20 スタンレー電気株式会社 Light guiding lens
KR20110013501A (en) * 2008-05-23 2011-02-09 루드 라이팅 인코포레이티드 Recessed led lighting fixture
US8348475B2 (en) * 2008-05-23 2013-01-08 Ruud Lighting, Inc. Lens with controlled backlight management
US8388193B2 (en) 2008-05-23 2013-03-05 Ruud Lighting, Inc. Lens with TIR for off-axial light distribution
TWI381134B (en) * 2008-06-02 2013-01-01 榮創能源科技股份有限公司 Led lighting module
US8016446B2 (en) * 2008-07-04 2011-09-13 Hon Hai Precision Industry Co., Ltd. Optical plate and backlight module using the same
DE202008008977U1 (en) * 2008-07-04 2009-11-19 Pasedag, Roland Lighting fixture, in particular in the form of a rescue sign luminaire
US20100002432A1 (en) * 2008-07-07 2010-01-07 Hubbell Incorporated Indirect luminaire utilizing led light sources
US20100073927A1 (en) * 2008-09-21 2010-03-25 Ian Lewin Lens for Solid-State Light-Emitting Device
US8662716B2 (en) * 2008-11-18 2014-03-04 Orafol Americas Inc. Side-emitting optical elements and methods thereof
CN102246219B (en) * 2008-12-09 2015-02-25 皇家飞利浦电子股份有限公司 Lighting system with fiber diffusing element
JP4655155B2 (en) * 2009-01-26 2011-03-23 ソニー株式会社 Light emitting device and image display device
TW201030281A (en) * 2009-02-13 2010-08-16 Ama Precision Inc Light-emitting apparatus and light-guiding member thereof
US8576406B1 (en) 2009-02-25 2013-11-05 Physical Optics Corporation Luminaire illumination system and method
US9255686B2 (en) 2009-05-29 2016-02-09 Cree, Inc. Multi-lens LED-array optic system
WO2011029127A1 (en) * 2009-09-10 2011-03-17 Jeffrey Kenneth Procter A lighting assembly
CN102511012B (en) * 2009-09-21 2014-10-15 皇家飞利浦电子股份有限公司 Light emitting device comprising a light guide plate with reflective shielding with glare reduction
TWI396310B (en) * 2009-10-02 2013-05-11 Everlight Electronics Co Ltd Light-emitting diode structure
JP5023134B2 (en) * 2009-10-27 2012-09-12 株式会社遠藤照明 LED light distribution lens, LED illumination module including the LED light distribution lens, and lighting fixture including the LED illumination module
CN102597605B (en) * 2009-11-09 2016-02-10 三菱电机株式会社 Surface light source apparatus and use its display unit
CZ309346B6 (en) * 2010-11-01 2022-09-14 Varroc Lighting Systems, s.r.o. Light guiding module with adjustable illumination of the contour surface
EP2375130B1 (en) * 2010-04-09 2014-07-02 Thorn Europhane S.A. Lighting module for tunnel, road or street light
US20130163283A1 (en) * 2010-07-23 2013-06-27 Sharp Kabushiki Kaisha Light guide, light source unit, illuminating device, and display device
JP5512447B2 (en) 2010-07-27 2014-06-04 シャープ株式会社 lighting equipment
US10451251B2 (en) * 2010-08-02 2019-10-22 Ideal Industries Lighting, LLC Solid state lamp with light directing optics and diffuser
KR20120014325A (en) * 2010-08-09 2012-02-17 삼성엘이디 주식회사 Optical lenses and lighting devices
CN102374419A (en) * 2010-08-20 2012-03-14 光宝科技股份有限公司 Led lamp
CN102374418B (en) * 2010-08-20 2014-08-20 光宝电子(广州)有限公司 Luminous diode light fixture
US10883702B2 (en) 2010-08-31 2021-01-05 Ideal Industries Lighting Llc Troffer-style fixture
US9075172B2 (en) * 2010-09-20 2015-07-07 Luxingtek, Ltd. Light converting optical structure and lighting device utilizing the same
US8814391B2 (en) * 2010-09-20 2014-08-26 Luxingtek, Ltd. Light guiding structure
CN101936476B (en) * 2010-09-24 2013-06-05 鸿富锦精密工业（深圳）有限公司 Three-color optical mixing LED point light source device
WO2012042460A1 (en) * 2010-09-29 2012-04-05 Koninklijke Philips Electronics N.V. Tube luminescent retrofit using high power light emitting diodes
WO2012042436A1 (en) * 2010-09-29 2012-04-05 Koninklijke Philips Electronics N.V. Tir optics with optimized incoupling structure
US20120092887A1 (en) * 2010-10-15 2012-04-19 Shenzhen China Star Optoelectronics Technology Co., Ltd. Backlight module and display apparatus
BR112013013120A8 (en) 2010-11-30 2018-01-02 Koninklijke Philips Electronics Nv OPTICAL UNIT AND LAMP
TWI407052B (en) * 2010-12-21 2013-09-01 Aether Systems Inc Omnidirectional led lamp
US8297799B2 (en) * 2010-12-02 2012-10-30 Aether Systems Inc. Omnidirectional LED lamp and complex, unitary lens
US9581312B2 (en) * 2010-12-06 2017-02-28 Cree, Inc. LED light fixtures having elongated prismatic lenses
US9494293B2 (en) 2010-12-06 2016-11-15 Cree, Inc. Troffer-style optical assembly
JP5643670B2 (en) 2011-02-03 2014-12-17 株式会社エンプラス Luminous flux control member and lighting device
DE102011000652A1 (en) 2011-02-11 2012-08-16 Vossloh-Schwabe Optoelectronic Gmbh & Co. Kg Reflector for lighting
CN102691890A (en) * 2011-03-21 2012-09-26 欧司朗股份有限公司 Omnidirectional lighting device
WO2012132872A1 (en) 2011-03-25 2012-10-04 ナルックス株式会社 Illumination device
CN103443664B (en) * 2011-03-25 2015-08-05 纳卢克斯株式会社 Lighting device
JP5172988B2 (en) * 2011-04-12 2013-03-27 シャープ株式会社 Lighting device
US20130258656A1 (en) * 2011-05-19 2013-10-03 Huei-dung Chin Modulated LED light tube
TWM415245U (en) * 2011-06-30 2011-11-01 Chun Kuang Optics Corp Optic element and lighting device comprising the optic element
US8876325B2 (en) * 2011-07-01 2014-11-04 Cree, Inc. Reverse total internal reflection features in linear profile for lighting applications
US10823347B2 (en) 2011-07-24 2020-11-03 Ideal Industries Lighting Llc Modular indirect suspended/ceiling mount fixture
US9028120B2 (en) 2011-08-08 2015-05-12 Quarkstar Llc Illumination devices including multiple light emitting elements
US9081125B2 (en) 2011-08-08 2015-07-14 Quarkstar Llc Illumination devices including multiple light emitting elements
JP2013045651A (en) * 2011-08-24 2013-03-04 Panasonic Corp lighting equipment
US8523407B2 (en) * 2011-09-13 2013-09-03 Chun Kuang Optics Corp. Optical element and illuminant device using the same
JP5683421B2 (en) * 2011-09-27 2015-03-11 株式会社ジャパンディスプレイ Lighting device
JP2013101901A (en) * 2011-10-20 2013-05-23 Toshiba Corp Flat lamp device
TW201326890A (en) * 2011-12-22 2013-07-01 Dongguan Ledlink Optics Inc Uniform lens
US10544925B2 (en) 2012-01-06 2020-01-28 Ideal Industries Lighting Llc Mounting system for retrofit light installation into existing light fixtures
US9777897B2 (en) 2012-02-07 2017-10-03 Cree, Inc. Multiple panel troffer-style fixture
US10408429B2 (en) 2012-02-29 2019-09-10 Ideal Industries Lighting Llc Lens for preferential-side distribution
US9541257B2 (en) 2012-02-29 2017-01-10 Cree, Inc. Lens for primarily-elongate light distribution
US9541258B2 (en) 2012-02-29 2017-01-10 Cree, Inc. Lens for wide lateral-angle distribution
EP2823346B1 (en) * 2012-03-06 2017-06-14 Fraen Corporation Oscillating interface for light mixing lenses
US9310038B2 (en) 2012-03-23 2016-04-12 Cree, Inc. LED fixture with integrated driver circuitry
US9494294B2 (en) 2012-03-23 2016-11-15 Cree, Inc. Modular indirect troffer
US9054019B2 (en) * 2012-04-02 2015-06-09 Cree, Inc. Low profile lighting module with side emitting LEDs
US9874322B2 (en) 2012-04-10 2018-01-23 Cree, Inc. Lensed troffer-style light fixture
CN108054269B (en) * 2012-04-28 2020-07-24 广西东科视创光电科技有限公司 Light-emitting diode
USD697664S1 (en) 2012-05-07 2014-01-14 Cree, Inc. LED lens
CN102705776A (en) * 2012-05-16 2012-10-03 广州市鸿利光电股份有限公司 Lens realizing even and rectangular facula
KR101491207B1 (en) * 2012-07-18 2015-02-06 엘지이노텍 주식회사 Display device and light emitting device
TW201408946A (en) * 2012-08-21 2014-03-01 辰峯光電股份有限公司 Light emitting apparatus
US9846272B2 (en) 2012-09-13 2017-12-19 Quarkstar Llc Illumination systems providing direct and indirect illumination
WO2014043369A2 (en) 2012-09-13 2014-03-20 Quarkstar Llc Devices for workspace illumination
DE102012109111A1 (en) * 2012-09-26 2014-04-17 Osram Gmbh Optical arrangement and lighting device with optical arrangement
US20150285450A1 (en) * 2012-10-19 2015-10-08 Koninklijke Philips N.V. Lighting device for indirect illumination
CN104822986B (en) * 2012-12-03 2018-12-14 飞利浦照明控股有限公司 Use the light emitting device of light guide
US8864346B2 (en) * 2012-12-10 2014-10-21 GE Lighting Solutions, LLC Lens-reflector combination for batwing light distribution
US8944660B2 (en) * 2013-01-23 2015-02-03 Ledil Oy Light guide
EP2864694B1 (en) 2013-02-08 2016-01-20 Quarkstar LLC Illumination device providing direct and indirect illumination
EP2956713B1 (en) * 2013-02-13 2018-07-11 Quarkstar LLC Solid-state luminaries
USD732709S1 (en) 2013-03-13 2015-06-23 GE Lighting Solutions, LLC LED lamp with an elevated light unit
US10648643B2 (en) 2013-03-14 2020-05-12 Ideal Industries Lighting Llc Door frame troffer
USD718490S1 (en) 2013-03-15 2014-11-25 Cree, Inc. LED lens
US9052075B2 (en) 2013-03-15 2015-06-09 Cree, Inc. Standardized troffer fixture
JP5403775B1 (en) * 2013-03-27 2014-01-29 株式会社光波 Lighting device and display device
KR101524914B1 (en) 2013-03-28 2015-06-01 엘지이노텍 주식회사 Light diffusion device, and light emitting device array unit having the same
KR20140123134A (en) * 2013-04-10 2014-10-22 삼성전자주식회사 Reflective diffusion lens and lighting installation
EP3270041B1 (en) 2013-04-19 2019-07-10 Quarkstar LLC Illumination devices with adjustable optical elements
US10262462B2 (en) 2014-04-18 2019-04-16 Magic Leap, Inc. Systems and methods for augmented and virtual reality
CN104279506A (en) * 2013-07-04 2015-01-14 展晶科技(深圳)有限公司 Optical lens and light-emitting element using the optical lens
US9010951B2 (en) 2013-07-05 2015-04-21 Lg Innotek Co., Ltd. Optical lens, light emitting device, and display
WO2015004937A1 (en) * 2013-07-10 2015-01-15 ナルックス株式会社 Optical element
DE102013011877B4 (en) * 2013-07-17 2016-02-25 Erco Gmbh Luminaire with a collimator optics
WO2015010080A1 (en) 2013-07-18 2015-01-22 Quarkstar Llc Luminaire module with multiple light guide elements
CN104344333A (en) * 2013-07-30 2015-02-11 展晶科技(深圳)有限公司 Optical lens and light-emitting element using the optical lens
US9608177B2 (en) * 2013-08-27 2017-03-28 Lumens Co., Ltd. Light emitting device package and backlight unit having the same
USD786471S1 (en) 2013-09-06 2017-05-09 Cree, Inc. Troffer-style light fixture
KR101413241B1 (en) * 2013-09-13 2014-06-27 주식회사 쏠라사이언스 Led lighting apparatus having light distribution lens
CN110553165A (en) 2013-09-17 2019-12-10 夸克星有限责任公司 Light guide illumination device for direct-indirect illumination
US9435504B2 (en) * 2013-10-30 2016-09-06 Ford Global Technologies, Llc Apparatus for radiating light from a virtual source
CN103591509B (en) * 2013-11-08 2015-09-09 京东方科技集团股份有限公司 A kind of backlight and display device
WO2015071985A1 (en) * 2013-11-13 2015-05-21 アジアブリッジジャパン株式会社 Light-emitting device
JP2015207754A (en) 2013-12-13 2015-11-19 日亜化学工業株式会社 Light emitting device
CN104713034A (en) * 2013-12-17 2015-06-17 富泰华精密电子（郑州）有限公司 Backlight module
US9523479B2 (en) 2014-01-03 2016-12-20 Cree, Inc. LED lens
USD772465S1 (en) 2014-02-02 2016-11-22 Cree Hong Kong Limited Troffer-style fixture
US10451253B2 (en) 2014-02-02 2019-10-22 Ideal Industries Lighting Llc Troffer-style fixture with LED strips
USD807556S1 (en) 2014-02-02 2018-01-09 Cree Hong Kong Limited Troffer-style fixture
US10527225B2 (en) 2014-03-25 2020-01-07 Ideal Industries, Llc Frame and lens upgrade kits for lighting fixtures
TWI536077B (en) * 2014-04-09 2016-06-01 友達光電股份有限公司 Optical assembly and back light module
KR102244427B1 (en) * 2014-06-02 2021-04-27 엘지이노텍 주식회사 Lighting device
AT515790B1 (en) * 2014-06-11 2015-12-15 Zizala Lichtsysteme Gmbh Lighting device for a motor vehicle and vehicle headlights with lighting device
US9784433B2 (en) * 2014-09-30 2017-10-10 The Boeing Company Optical devices for light mixing
US11306897B2 (en) 2015-02-09 2022-04-19 Ecosense Lighting Inc. Lighting systems generating partially-collimated light emissions
US10801696B2 (en) 2015-02-09 2020-10-13 Ecosense Lighting Inc. Lighting systems generating partially-collimated light emissions
US10302278B2 (en) * 2015-04-09 2019-05-28 Cree, Inc. LED bulb with back-reflecting optic
JP2016213051A (en) * 2015-05-08 2016-12-15 株式会社エンプラス Surface light source device
US10012354B2 (en) 2015-06-26 2018-07-03 Cree, Inc. Adjustable retrofit LED troffer
CN107407472B (en) * 2015-08-05 2020-06-09 株式会社派特莱 Lens member and light emitting device
US9806242B2 (en) * 2015-09-23 2017-10-31 Hon Hai Precision Industry Co., Ltd. Optical lens for light emitting diode device
US10253948B1 (en) 2017-03-27 2019-04-09 EcoSense Lighting, Inc. Lighting systems having multiple edge-lit lightguide panels
US11635188B2 (en) 2017-03-27 2023-04-25 Korrus, Inc. Lighting systems generating visible-light emissions for dynamically emulating sky colors
US11585515B2 (en) 2016-01-28 2023-02-21 Korrus, Inc. Lighting controller for emulating progression of ambient sunlight
JP2018061024A (en) * 2016-10-04 2018-04-12 株式会社エンプラス Luminous flux control member, light emitting device, and illumination device
WO2018066418A1 (en) * 2016-10-04 2018-04-12 株式会社エンプラス Light bundle control member, light emitting device, and illuminating device
US10468566B2 (en) 2017-04-10 2019-11-05 Ideal Industries Lighting Llc Hybrid lens for controlled light distribution
JP2019040859A (en) * 2017-08-22 2019-03-14 株式会社エンプラス Light emitting device, surface light source device, and light flux controlling member
CN108198844A (en) * 2018-01-03 2018-06-22 京东方科技集团股份有限公司 A kind of display panel, its production method and display device
JP6703312B2 (en) 2018-05-31 2020-06-03 日亜化学工業株式会社 Light emitting module and surface emitting light source
CN110693392A (en) * 2018-07-10 2020-01-17 添可电器有限公司 Hand-held vacuum cleaner
WO2020057514A1 (en) * 2018-09-17 2020-03-26 欧普照明股份有限公司 Illumination lamp, illumination module, and lens
KR101997406B1 (en) * 2018-10-12 2019-10-17 이현규 LED sign board
KR102057882B1 (en) 2019-03-06 2019-12-20 최종영 channel sign board
JP7148813B2 (en) * 2019-10-30 2022-10-06 日亜化学工業株式会社 Light source device
US11587362B2 (en) 2020-12-16 2023-02-21 Lenovo (Singapore) Pte. Ltd. Techniques for determining sign language gesture partially shown in image(s)
US12253222B2 (en) 2021-06-04 2025-03-18 Signify Holding B.V. Multi-color mixing and shaping optic and system

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5404869A (en) * 1992-04-16 1995-04-11 Tir Technologies, Inc. Faceted totally internally reflecting lens with individually curved faces on facets
US6582103B1 (en) * 1996-12-12 2003-06-24 Teledyne Lighting And Display Products, Inc. Lighting apparatus
US6598998B2 (en) 2001-05-04 2003-07-29 Lumileds Lighting, U.S., Llc Side emitting light emitting device
US6607286B2 (en) 2001-05-04 2003-08-19 Lumileds Lighting, U.S., Llc Lens and lens cap with sawtooth portion for light emitting diode
US6679621B2 (en) * 2002-06-24 2004-01-20 Lumileds Lighting U.S., Llc Side emitting LED and lens
US20040070855A1 (en) * 2002-10-11 2004-04-15 Light Prescriptions Innovators, Llc, A Delaware Limited Liability Company Compact folded-optics illumination lens
US20040207999A1 (en) * 2003-03-14 2004-10-21 Toyoda Gosei Co., Ltd. LED package
US20040218390A1 (en) * 2003-01-24 2004-11-04 Digital Optics International Corporation High-density illumination system
US20050024744A1 (en) * 2003-07-29 2005-02-03 Light Prescriptions Innovators, Llc Circumferentially emitting luminaires and lens-elements formed by transverse-axis profile-sweeps
US6974229B2 (en) * 2003-05-21 2005-12-13 Lumileds Lighting U.S., Llc Devices for creating brightness profiles
US7034343B1 (en) * 2004-10-20 2006-04-25 Samsung Electro-Mechanics Co., Ltd. Dipolar side-emitting LED lens and LED module incorporating the same

Family Cites Families (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623313A (en) * 1948-06-14 1952-12-30 Paul E Fuchs Edge illuminated sign
JPH0393080U (en) * 1989-10-14 1991-09-24
JPH0397327U (en) * 1990-01-23 1991-10-07
JP2511717B2 (en) 1990-02-05 1996-07-03 三菱電線工業株式会社 LED module
JPH0555567A (en) 1991-08-27 1993-03-05 Fujitsu Ltd Manufacture of tft matrix
JPH0555567U (en) * 1991-12-24 1993-07-23 スタンレー電気株式会社 LED surface light source device
US5507286A (en) * 1993-12-23 1996-04-16 Medical Taping Systems, Inc. Method and apparatus for improving the durability of a sensor
WO1996010761A1 (en) 1994-10-04 1996-04-11 Minnesota Mining And Manufacturing Company Self-contained lighted marking device
US5779351A (en) * 1995-05-02 1998-07-14 Daktronics, Inc. Matrix display with multiple pixel lens and multiple partial parabolic reflector surfaces
US6712481B2 (en) * 1995-06-27 2004-03-30 Solid State Opto Limited Light emitting panel assemblies
US6065846A (en) * 1996-04-24 2000-05-23 Denso Corporation Indicating instrument having light conducting plate
US5727862A (en) * 1996-11-25 1998-03-17 Taiwan Liton Electronic Co., Ltd. LED back light assembly
JP3930085B2 (en) * 1996-12-24 2007-06-13 ローム株式会社 Linear light source device, light guide member used therefor, and image reading device including a linear light source using the light guide member
JP3892515B2 (en) * 1996-12-27 2007-03-14 ローム株式会社 Linear light source device and image reading apparatus using the linear light source device
JPH10190960A (en) * 1996-12-27 1998-07-21 Rohm Co Ltd Linear light source device and image reader using the linear light source device
BR9811170A (en) * 1997-08-12 2000-07-25 Decoma Int Inc Bi-reflective lens kit and light emitting kit for use in a vehicle
JPH11284803A (en) 1998-03-27 1999-10-15 Citizen Electronics Co Ltd Linear light source unit
JP2000147264A (en) * 1998-11-05 2000-05-26 Mitsubishi Chemicals Corp Light control sheet and surface light source device using the same
US6752505B2 (en) * 1999-02-23 2004-06-22 Solid State Opto Limited Light redirecting films and film systems
JP2000299500A (en) * 1999-04-15 2000-10-24 Mayumi Ishida Light emitting diode
EP1200772B1 (en) * 1999-07-21 2007-12-12 Teledyne Lighting and Display Products, Inc. Illumination apparatus
US6874909B2 (en) * 2003-01-13 2005-04-05 Carl R. Vanderschuit Mood-enhancing illumination apparatus
JP2002049324A (en) * 2000-07-31 2002-02-15 Nippon Seiki Co Ltd Back light device
US6623150B2 (en) * 2000-08-23 2003-09-23 Truck-Lite Co., Inc. Light-emitting diode combination marker/clearance lamp for trucks and trailers
JP4023079B2 (en) * 2000-08-31 2007-12-19 株式会社日立製作所 Planar illumination device and display device including the same
JP4195548B2 (en) * 2000-10-24 2008-12-10 アルパイン株式会社 Illumination device
JP4106876B2 (en) * 2001-03-30 2008-06-25 日亜化学工業株式会社 Light emitting device
JP2004087630A (en) * 2002-08-23 2004-03-18 Toyoda Gosei Co Ltd Light emitting diode and led light
US6851834B2 (en) * 2001-12-21 2005-02-08 Joseph A. Leysath Light emitting diode lamp having parabolic reflector and diffuser
DE20206829U1 (en) * 2002-04-30 2002-09-05 Automotive Lighting Reutlingen GmbH, 72762 Reutlingen Luminaire, in particular position lamp
JP2003331604A (en) 2002-05-16 2003-11-21 Harison Toshiba Lighting Corp Backlight unit
JP4153370B2 (en) 2002-07-04 2008-09-24 株式会社小糸製作所 Vehicle lighting
JP2004047351A (en) * 2002-07-15 2004-02-12 Koito Mfg Co Ltd Vehicular lighting fixture
JP3923867B2 (en) * 2002-07-26 2007-06-06 株式会社アドバンスト・ディスプレイ Planar light source device and liquid crystal display device using the same
JP4436105B2 (en) * 2002-11-29 2010-03-24 富士通株式会社 Reflector, illumination device, light guide plate, and display device
CN1510482A (en) 2002-12-24 2004-07-07 明基电通股份有限公司 Direct Type Backlight Module
US7534013B1 (en) * 2003-01-16 2009-05-19 Simon Jerome H Illuminating devices using small PT sources including LEDs
TW566564U (en) * 2003-01-29 2003-12-11 Hon Hai Prec Ind Co Ltd Back light module and liquid crystal display using the same
US20040223315A1 (en) * 2003-03-03 2004-11-11 Toyoda Gosei Co., Ltd. Light emitting apparatus and method of making same
JP2005158362A (en) * 2003-11-21 2005-06-16 Stanley Electric Co Ltd Vehicle lighting
US7213933B2 (en) * 2004-01-02 2007-05-08 Entire Technology Co., Ltd. Direct type backlight module of diffuser plate and its manufacturing method thereof
JP3766422B2 (en) * 2004-01-13 2006-04-12 ローム株式会社 Linear light source device and image reading device
JP4471685B2 (en) * 2004-03-10 2010-06-02 シチズン電子株式会社 Lighting device
KR100576865B1 (en) * 2004-05-03 2006-05-10 삼성전기주식회사 LED array module for backlight and backlight unit having same
TWI249257B (en) * 2004-09-24 2006-02-11 Epistar Corp Illumination apparatus
TWI317829B (en) * 2004-12-15 2009-12-01 Epistar Corp Led illumination device and application thereof

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5404869A (en) * 1992-04-16 1995-04-11 Tir Technologies, Inc. Faceted totally internally reflecting lens with individually curved faces on facets
US6582103B1 (en) * 1996-12-12 2003-06-24 Teledyne Lighting And Display Products, Inc. Lighting apparatus
US6598998B2 (en) 2001-05-04 2003-07-29 Lumileds Lighting, U.S., Llc Side emitting light emitting device
US6607286B2 (en) 2001-05-04 2003-08-19 Lumileds Lighting, U.S., Llc Lens and lens cap with sawtooth portion for light emitting diode
US6679621B2 (en) * 2002-06-24 2004-01-20 Lumileds Lighting U.S., Llc Side emitting LED and lens
US20040070855A1 (en) * 2002-10-11 2004-04-15 Light Prescriptions Innovators, Llc, A Delaware Limited Liability Company Compact folded-optics illumination lens
US20040218390A1 (en) * 2003-01-24 2004-11-04 Digital Optics International Corporation High-density illumination system
US20040207999A1 (en) * 2003-03-14 2004-10-21 Toyoda Gosei Co., Ltd. LED package
US6974229B2 (en) * 2003-05-21 2005-12-13 Lumileds Lighting U.S., Llc Devices for creating brightness profiles
US20050024744A1 (en) * 2003-07-29 2005-02-03 Light Prescriptions Innovators, Llc Circumferentially emitting luminaires and lens-elements formed by transverse-axis profile-sweeps
US7034343B1 (en) * 2004-10-20 2006-04-25 Samsung Electro-Mechanics Co., Ltd. Dipolar side-emitting LED lens and LED module incorporating the same

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8220958B2 (en) 2007-04-05 2012-07-17 Koninklijke Philips Electronics N.V. Light-beam shaper
US20100118531A1 (en) * 2007-04-05 2010-05-13 Koninklijke Philips Electronics N.V. Light-beam shaper
DE102008001164B4 (en) * 2007-04-17 2015-01-15 Varroc Lighting Systems S.R.O lens assembly
US7766509B1 (en) 2008-06-13 2010-08-03 Lumec Inc. Orientable lens for an LED fixture
US20100271829A1 (en) * 2008-06-13 2010-10-28 Lumec Inc. Orientable lens for a led fixture
US7959326B2 (en) 2008-06-13 2011-06-14 Philips Electronics Ltd Orientable lens for a LED fixture
US8246212B2 (en) 2009-01-30 2012-08-21 Koninklijke Philips Electronics N.V. LED optical assembly
US20100195333A1 (en) * 2009-01-30 2010-08-05 Gary Eugene Schaefer Led optical assembly
TWI459048B (en) * 2009-02-26 2014-11-01
US8118457B2 (en) * 2009-11-04 2012-02-21 Nalux Co., Ltd. Illuminating device
US20110157898A1 (en) * 2009-11-04 2011-06-30 Nalux Co., Ltd. Illuminating device
TWI418854B (en) * 2010-03-16 2013-12-11 Cal Comp Electronics & Comm Co Lens structure
US20130221829A1 (en) * 2010-08-31 2013-08-29 Toshiba Lighting & Technology Corporation Lens, lighting device, bulb-type lamp, and luminaire
US8975806B2 (en) * 2010-08-31 2015-03-10 Toshiba Lighting & Technology Corporation Bulb-type lamp
US20120313534A1 (en) * 2011-06-08 2012-12-13 GE Lighting Solutions, LLC Low profile lamp using tir lens
KR20140025508A (en) * 2011-06-08 2014-03-04 지이 라이팅 솔루션스, 엘엘씨 Low profile lamp using tir lens
US8696173B2 (en) * 2011-06-08 2014-04-15 GE Lighting Solutions, LLC Low profile lamp using TIR lens
US20130027946A1 (en) * 2011-07-29 2013-01-31 Taiwan Semiconductor Manufactruring Company, Ltd. Wide angle based indoor lighting lamp
US8757845B2 (en) * 2011-07-29 2014-06-24 TSMC Solid State Lighting, Ltd. Wide angle based indoor lighting lamp

Also Published As

Publication number Publication date
DE102005045590B4 (en) 2016-05-12
US8657467B2 (en) 2014-02-25
US20060077685A1 (en) 2006-04-13
JP2012113312A (en) 2012-06-14
KR100990813B1 (en) 2010-10-29
DE102005045590A1 (en) 2006-04-27
US20060067640A1 (en) 2006-03-30
JP2006099117A (en) 2006-04-13
DE102005045588B4 (en) 2018-05-09
JP5150047B2 (en) 2013-02-20
US7341358B2 (en) 2008-03-11
TWI249257B (en) 2006-02-11
DE102005045588A1 (en) 2006-05-04
US20080112156A1 (en) 2008-05-15
US20070104963A1 (en) 2007-05-10
JP2006093148A (en) 2006-04-06
JP5367850B2 (en) 2013-12-11
US7142769B2 (en) 2006-11-28
TW200611435A (en) 2006-04-01
KR20060051571A (en) 2006-05-19

Similar Documents

Publication Publication Date Title
US7454119B2 (en) Illumination package
US6598998B2 (en) Side emitting light emitting device
US6607286B2 (en) Lens and lens cap with sawtooth portion for light emitting diode
US7034343B1 (en) Dipolar side-emitting LED lens and LED module incorporating the same
EP2276076B1 (en) Light emitting unit with lens
US9287474B2 (en) Side-emitting optical coupling device
US7083313B2 (en) Side-emitting collimator
RU2475672C2 (en) Compact optical system and lenses for producing uniform collimated light
US7841739B2 (en) Total internal reflection side emitting coupling device
KR100616598B1 (en) Light emitting diode lens and backlight module having the same
JP2006099117A5 (en)
US8704149B2 (en) Optoelectronic device assembly having auxiliary energy receiver
EP1376708A2 (en) Side emitting LED and lens
JPH0983018A (en) Light emitting diode unit
KR101044682B1 (en) Lighting package
TWI441362B (en) Light-emitting module and light-emitting device thereof
US8616733B1 (en) Light emitting diode optical system and related methods
US11927340B2 (en) Reflective device and light source module
CN100433385C (en) light emitting device
CN100388014C (en) Side illumination type lens group
TWI298207B (en) Illumination package
CN111613713A (en) Optical Components and Optical Modules
KR100764235B1 (en) Lateral radiation lens
TWI578575B (en) Lighting apparatus and lens structure thereof

Legal Events

Date Code Title Description
AS Assignment

Owner name: EPISTAR CORPORATION, TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HSIEH, MIN-HSUN;YIN, CHOU-CHIH;REEL/FRAME:018836/0940;SIGNING DATES FROM 20061227 TO 20061228

STCF Information on status: patent grant

Free format text: PATENTED CASE

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 12